Click on the May holidays listed in blue for more details.
| Holidays | Date | Details |
|---|---|---|
| May Day 2027 | May 1 - Saturday | Observance |
| Orthodox Easter 2027 | May 2 - Sunday | Orthodox |
| Yom Hashoah 2027 | May 4 - Tuesday | Jewish |
| Cinco de Mayo 2027 | May 5 - Wednesday | Observance |
| National Nurses Day 2027 | May 6 - Thursday | Observance |
| National Day of Prayer 2027 | May 6 - Thursday | Observance |
| Peace Officers Memorial Day 2027 | May - Thursday | Observance |
| Mothers' Day 2027 | May 9 - Sunday | Observance |
| Ascension Day 2027 | May 14 - Thursday | Christian |
| Armed Forces Day 2027 | May 15 - Saturday | Observance |
| Day of Arafat 2027 | May 6 - Sunday | Muslim |
| Pentecost 2027 | May 16 - Sunday | Christian |
| Eid al-Adha 2027 | May 17 - Monday | Muslim |
| Whit Monday 2027 | May 17 - Monday | Christian |
| National Maritime Day 2027 | May 22 - Saturday | Observance |
| Lag BaOmer 2027 | May 25 - Tuesday | Jewish |
| Corpus Christi 2027 | May 27 - Thursday | Christian |
| Memorial Day 2027 | May 31 - Monday | Federal Holiday |
